Diversidad fúngica en el filoplano de Osmorhiza spp. relacionado con el sistema de regeneración empleado en bosques de Nothofagus pumilio en Tierra del Fuego, Argentina

Abstract

Diversidad fúngica en el filoplano de Osmorhiza spp. relacionado con el sistema de regeneración empleado en bosques de Nothofagus pumilio en Tierra del Fuego, Argentina Fungi diversity in Osmorhiza spp. phylloplane related to the regeneration system applied in Nothofagus pumilio forests in Tierra del Fuego, Argentina.

Alternative silvicultural practices with variable retention to improve understory plant diversity conservation in southern Patagonian forests

“…Species codes figure in Appendix Table A recommended to improve re-growth (Schmidt and Urzúa, 1982;Martínez Pastur et al, 2000;Rosenfeld et al, 2006). But, this last method significantly affects the original diversity of N. pumilio forests (plants, mosses, birds, insects and mammals) (Martínez Pastur et al, 1999aPulido et al, 2000;Deferrari et al, 2001;Spagarino et al, 2001;Ducid et al, 2005). During the last 10 years, the variable retention approach has been proposed as a new and more conservative harvesting alternative for these forests (Martí-nez Pastur and Lencinas et al, 2007;Martínez Pastur et al, 2009).…”

Timber management with variable retention in Nothofagus pumilio forests of Southern Patagonia

“…Forests dominated by this species have been regenerated using various methods, including high grading cuttings, clear-cuts (CC) or shelterwood cuts (SC) (Schmidt and Urzú a, 1982;Martínez Pastur et al, 1999;Gea et al, 2004;Rosenfeld et al, 2006). These traditional silvicultural practices (e.g., shelterwood cuts) significantly affected the original diversity of flora and fauna in these forests (Pulido et al, 2000;Deferrari et al, 2001;Spagarino et al, 2001;Martínez Pastur et al, 2002a;Ducid et al, 2005). Consequently, ecological and social criteria are being increasingly prioritized over economic values alone, as the basis for their future management (Mitchell and Beese, 2002;DeBell and Curtis, 1993).…”

Differential forage use between large native and domestic herbivores in Southern Patagonian Nothofagus forests

“…Timber harvesting impacts on forest structure include decreasing canopy cover and modifying microclimate conditions such as temperature, solar radiation and soil moisture at the understory level (Frangi and Richter 1994;Promis et al 2010). Consequently, large changes occur in native biodiversity (Spagarino et al 2001;Deferrari et al 2001;Ducid et al 2005;Lencinas et al 2008Lencinas et al , 2009Lencinas et al , 2011, including plant understory communities, whose richness and biomass greatly increase (Martí-nez Pastur et al 2002;Lencinas et al 2008Lencinas et al , 2011. For their part, local ranching activities base their economy on raising domestic herbivores, mainly cattle (Bos taurus) and sheep (Ovis aries).…”